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OFFICIAL<br>
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<p class="MsoNormal">Hello<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">OS = Win 10<o:p></o:p></p>
<p class="MsoNormal">GRASS GIS Version 8.3.0 64 Bit<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am attempting to create a stream classification and have tried the two approaches below.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Is there something wrong with my approach?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Try 1<o:p></o:p></p>
<p class="MsoNormal">gs.run_command('r.fill.dir', input=input_raster, output='fill', direction='flowdir_fill', overwrite=True)<o:p></o:p></p>
<p class="MsoNormal">gs.run_command('r.watershed', flags='sa', elevation='fill', threshold=500000, basin='raster_basin', accumulation='flowacc', stream='stream_raster_watershed', overwrite=True)<o:p></o:p></p>
<p class="MsoNormal">gs.run_command('r.stream.order', stream_rast='stream_raster_watershed', direction='flowdir_fill', elevation=input_raster, accumulation='flowacc', stream_vect='stream_vect', strahler='strahler', overwrite=True)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Try 2<o:p></o:p></p>
<p class="MsoNormal">gs.run_command('r.fill.dir', input=input_raster, output='fill', direction='flowdir_fill', overwrite=True)<o:p></o:p></p>
<p class="MsoNormal">gs.run_command('r.stream.extract', elevation=input_raster, threshold=stream_threshold, stream_raster='stream_raster', stream_vector='stream_vector', direction='flowdir_extract', overwrite=True)<o:p></o:p></p>
<p class="MsoNormal">gs.run_command('r.stream.order', stream_rast='stream_raster_watershed', direction='flowdir_extract', elevation=input_raster, accumulation='flowacc', stream_vect='stream_vect', strahler='strahler', overwrite=True)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The GRASS GIS system returns the following error message to me;<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Traceback (most recent call last):<o:p></o:p></p>
<p class="MsoNormal"> File<o:p></o:p></p>
<p class="MsoNormal">"F:\grassdata\hydro\PERMANENT\.tmp\unknown\4728.20.py", line<o:p></o:p></p>
<p class="MsoNormal">255, in <module><o:p></o:p></p>
<p class="MsoNormal"> main()<o:p></o:p></p>
<p class="MsoNormal"> File<o:p></o:p></p>
<p class="MsoNormal">"F:\grassdata\hydro\PERMANENT\.tmp\unknown\4728.20.py", line<o:p></o:p></p>
<p class="MsoNormal">217, in main<o:p></o:p></p>
<p class="MsoNormal"> gs.run_command('r.stream.order',<o:p></o:p></p>
<p class="MsoNormal"> File "C:\Program Files\GRASS GIS<o:p></o:p></p>
<p class="MsoNormal">8.3\etc\python\grass\script\core.py", line 466, in<o:p></o:p></p>
<p class="MsoNormal">run_command<o:p></o:p></p>
<p class="MsoNormal"> return handle_errors(returncode, result=None, args=args,<o:p></o:p></p>
<p class="MsoNormal">kwargs=kwargs)<o:p></o:p></p>
<p class="MsoNormal"> File "C:\Program Files\GRASS GIS<o:p></o:p></p>
<p class="MsoNormal">8.3\etc\python\grass\script\core.py", line 345, in<o:p></o:p></p>
<p class="MsoNormal">handle_errors<o:p></o:p></p>
<p class="MsoNormal"> raise CalledModuleError(module=module, code=code,<o:p></o:p></p>
<p class="MsoNormal">returncode=returncode)<o:p></o:p></p>
<p class="MsoNormal">grass.exceptions.CalledModuleError: Module run<o:p></o:p></p>
<p class="MsoNormal">`r.stream.order --o stream_rast=stream_raster_watershed<o:p></o:p></p>
<p class="MsoNormal">direction=flowdir_extract elevation=dtm-002-004<o:p></o:p></p>
<p class="MsoNormal">accumulation=flowacc stream_vect=stream_vect<o:p></o:p></p>
<p class="MsoNormal">strahler=strahler` ended with an error.<o:p></o:p></p>
<p class="MsoNormal">The subprocess ended with a non-zero return code:<o:p></o:p></p>
<p class="MsoNormal">3221225781. See errors above the traceback or in the error<o:p></o:p></p>
<p class="MsoNormal">output.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-AU">Regards<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-AU">Ben Davies<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-AU"><o:p> </o:p></span></p>
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